Bearing-fitting compound



' UNITED STATES, PATENT OFF-ICE;

HARRY o. HAGMAIER, or PITTSBURGH, PENNSYLVANIA, AssIGNoR To UNITED STATES PRODUCTS .ooMrANY, or PITTSBURGH, PENNSYLVANIA, A coRroRA- TION OF PENNSYLVANIA.

BEARI G-FITTING coMPoUNnI No lirawing.

To all whom it may concern:

Be it known that I, HARRY C. HAGMAIER,

a citizen of the United States, residingaty Pittsburgh, in'the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Rearing-Fitting Compounds, of which the following is a specification.

My invention consists of an improvement in bearing fitting compounds for Babbitt, brass, bronze, and all other soft metal bearlugs.

It has for its object to produce a suitable mixture, composed of the ingredients hereinafter described, in approximately the proportions given, which can be used to quickly smooth or wear in the surfaces of bearings for shafts, spindles, or similar mechanism, and which will maintain its condition, when In de, as a serviceable and commercial commodity for its intended use, without deterioration or efiect of temperature, time, or climatic conditions. I

In making my compound, 'I use the following ingredients in or about the following proportions, to wit: a

ingredients are mixed together in ,2 about the proportions above noted, more or less, and thoroughly commingled and amalgamated so as to produce a composite mass or resulting substance in the nature of a dry powder, with the several ingredients equally and thoroughly commingled with each other throughout. The mixture is used with sufficient oil to make it plastic and easily applied and distributed.

The silica is preferably substantially pure commercial silica having the usual qualito sharp abrasive action, and is ly fine in grain. Thatis to say, he particular use to which Specification of Letters Patent.

Patented Dec. 7, 1920.

Application filed June 30, 1920. Serial No. 393,085.

the compound is to be put for its action on comparat vely soft bearlngs, it may be either V coarse, medium, or fimIaLWhen' coars e; 1t 18 to the inch. I prefer to use a silica, derived from an originally compact solid deposit,

and free from either natural or other porosity producing cavities.

The white lead is the usual commercial white lead of commerce, and acts as a plastic body and binder for the contained ingredients. I

The graphite is preferably of comparatively fine grade and small size, so as to avoid the presence of any particles of appreciable size and without flakes.

Thesodium carbonate is of ordinaryoommercial quality.

The several ingredients, after having-been mixed in the manner described, are packed in containers of any suitable size orvshape,

and the material, when mixed with oil, is used in such quantities as to thoroughly cover the surfaces which, by their rubbing or revolving contact, are to be reduced to a good wearing bearing,as is commonly understood by those familiarwiththe art. The Y mixture, as made, vis capable of quickly reducing the bearing, with the 'efiect of a resulting fine, smooth surface upon the bearing, but without afiecting the smooth surface of the contained journal or spindle.

A comparatively small amount used in the manner of a coating is sufiicient, and the economy and efiiciency of the invention resides in the comparatively small cost of the several ingredients, the absence of necessity of'highly skilled labor or apparatus in its manufacture, while the results in use are directly dependent upon the several materials utilized in or about the proportions ven.

While excellent results have been secured by the proportions noted in the specification, it will, of course, be obvious that these may be varied from within certain limits, while still retaining the substantial advantages of the general composition, utilizing the substance in the manner abovedescribed.

Having thus described my invention, What 5 I claim is:

1. A bearing fitting compound composed of silica, white lead, graphite, and sodium, substantially as described.

signature.

HARRY C. HAGMAIER. 

